An adjusting device for a lumbar support comprises a pair of spaced guide members, an adjusting member coupled to the pair of guide members, and a drive mechanism for effecting an adjustment of the lumbar support. A DSP samples a surface image of a transferring belt or a transferring material at a fixed period with a CMOS sensor, and the DSP takes the sampled image into an inner buffer and stores it in an image memory. The upper resist layer is defined into first patterns. A user may furnish the disc with such additional information as a local disc ID and a local disc name specific to the user’s device.